Oct 2013 T&M
DCN1000 series: new design and new capabilities
HGH has been making infrared test equipment for over 30 years. With the industry's widest range of high-end blackbodies, we provide our customers with the best reliable reference sources they need to characterize the latest optronic sensors.
DCN1000N/H series are one of our most popular blackbodies, combining large emitting areas, from 50 mm x 50 mm to 300 mm x 300 mm, with high level of accuracy and stability. They can operate in absolute mode, with a stable and uniform temperature value over the whole area, or in differential mode, with an adjustable temperature difference between the source and a target on front.
HGH has revised the design of their largest sources in this series, the DCN1000 N12 and the DCN1000 N7, to fulfill a new requirement for an easier integration into complex test benches. Overall dimensions and weight have been minimized to the very limits while maintaining the highest level of performance, with an emissivity of 0.98, a uniformity better than 0.01°c and a stability lower than 0.002°c. In addition, the temperature of these reference sources can now be set from -5°c to 150°c, the widest range on the market for this kind of blackbodies.
DCN1000N/H series was developed from our involvement on strategic research projects in advanced IR technologies. They enable trustful measurements of all parameters of thermal imagers. Standard targets are available for NETD, LSF/MTF, MRTD, distortion characterizations. We can also provide any target pattern upon request. Furthermore, DCN1000N/H are compatible with operation in a climatic chamber, with a standard ambient temperature range from -20°c to +70°c, and -54°c to +71°c in option.
Improving cooling of cavity blackbodies
HGH Infrared Systems is offering to engineers a new way of working with a high temperature cavity blackbody as reference sources to characterize and calibrate near-IR and IR sensors. Until now, the particularly long thermal inertia of this kind of device, key elements in characterization benches, has had to be taken into account in test strategy. It could contribute to a major shift in project schedules, in case of unexpected results during test campaigns. HGH Infrared Systems has developed an innovative internal structure on its best-selling RCN1200N1 blackbody to highly reduce its temperature stabilization time. The CoolSpeed system nearly cuts in half the cooling duration of a cavity blackbody without altering its technical features such as high emissivity, high speed warm up and high stability. Now, with cavity blackbodies equipped with CoolSpeed, it is no longer necessary to calibrate systems exclusively by increasing temperatures. CoolSpeed brings high flexibility to users, especially in the context of Research and Development projects.
This achievement is the result of constructive exchanges with faithful clients in order to release convenient tools offering a real improvement in IR test processes. Of course, RCN high temperature reference sources still combine the highest performance, with an emissivity better than 0.99, a stability lower than 0.1°c and fast temperature rising time.
To find out more about the technology behind this innovation, please download below the paper presented at SPIE Security + Defence 2013, in Dresden.
Catherine Barrat - "Improving cooling of cavity blackbodies" - SPIE # 8896-20
copyright 2013 - Society of Photo-Optical Instrumantation Engineers.
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